CHICAGO (STMW) — Police said an 18-year-old man shot multiple times on the West Side Friday night is a suspect in a double murder less than 24 hours earlier in the Back of the Yards neighborhood.

The man was shot in the groin, back and neck while standing on a sidewalk in the 2800 block of West Arthington Street about 9:10 p.m., authorities said. He was taken in critical condition to Mount Sinai Hospital, where he remained Saturday morning.

A police source confirmed Saturday that the injured man was a suspect in the deaths of 5-year-old Sterling Sims and his mother Chevonne Brown, 31.

The mother and son were shot inside a house in the 5300 block of South Winchester Avenue about 2:40 a.m. on Friday.

Relatives said Brown lived with her mother until about three months ago when she moved in with a boyfriend who lives on the block where the murders occurred.

Doris Sims, the boy’s paternal grandmother, called Sterling “a really nice kid.”

She said her daughter was a dedicated mother who put her children first.

“She loved her kids,” Doris Sims said. “Anytime you’d see her she was with her kids.”

Area North detectives are investigating the West Side shooting, while Area Central detectives are investigating the double murder.

The 18-year-old man who was injured Friday was charged with aggravated unlawful use of a weapon and possession of a controlled substance in December 2012, records show.

A month before, he was also was arrested on another drug charge, unlawful use of a weapon and not having a firearm owner ID card.

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